LIC5B-Stream

= Long Island Creek Site 5B = = Stream Characteristics =

||
 * ~ Upstream view of Long Island Creek - Site B
 * [[image:watershed2012/LIC_5B%20-%20Upstream%201.JPG width="400" height="300"]] || [[image:watershed2012/LIC_5B%20-%20Upstream%202.JPG width="400" height="300"]] ||


 * ~ Downstream view of Long Island Creek - Site B ||
 * [[image:watershed2012/LIC_5B%20-%20Downstream%201.JPG width="400" height="300"]] || [[image:watershed2012/LIC_5B%20-%20Downstream%202.JPG width="400" height="300"]] ||

**__Overview__**
During the weekly monitoring of Long Island Creek - Site A, measurements were taken pertaining to the creek's width and depth so that discharge could be calculated. This was done every week in conjunction witht the other monitoring tests being performed. On the week of June 26, 2012, additional measurements were taken for the bankfull width and stream reach. Surveys of the general in-stream characterisitics and a visual-biological factors were also conducted by the group members during the week of July 3, 2012.

**__Physical Measurements__**
The study area for Long Island Creek - Site A had a bankfull width of 47.5 ft and a stream reach of 570 ft. The average width of the stream (from bank to bank) was 14.50 ft with an average depth of 0.19 ft. Prior to the measurements taken on June 12, 2012, there was rain the previous night. As a result, the width of the stream during that week as 16.25 ft, while the following two weeks it was 13.75 and 13.5 ft, respectively.

The stream flow decreased each week over the course of the monitoring. On the week of June 12 (after the rain event) the stream flow was measured at 2.54 cfs. The following week it was measured at 0.73 cfs, and during the last week of monitoring it was measured at 0.41 cfs. This was thought to be due to the lack of rain after the week of June 12, as well as the progressive increase in the temperatures over the monitoring period.



**__In-Stream Characteristics__**
The course of the creek within Site B was very straight, with the exception of the 90 degree turn that it made heading towards Site A, located downstream. The course resulted in two pools; one of which was located by the turn into Site A, and the other slightly further upstream where tree roots provided an area for the water to collect. The two riffles and runs alternated upstream past the second pool. There was a recent stream bank restoration performed on the left bank (looking upstream), which utilized the placement of large rocks and interspersed willow plants to prevent additional errosion of the bank. The small rocks and pebbles found in the riffles and runs were lightly embedded, while the heavier rocks used for the stream bank restoration that were directly on the bank were approximately halfway embedded. There was occasional woody and leaf debris found throughout the study area, however none was extensive and it was limited to small branches and leaves from the trees on the right bank (looking upstream). There was no suspended matter found in the water throughout the course of the monitoring, however there was a slight oily sheen to the waters surface in a few small locations along both banks. There was also a light fishy odor to the water throughout the monitoring period. The right bank (looking upstream) was heavily vegetated with both trees and shrubs and had steep banks. The roots to many of the trees were exposed, and there was noticeable erosion and soil loss. The left bank was moderately vegetated with much of it being the willows used in the restoration project, as well as interspersed trees further upstream. In the areas where the rocks and willows were placed, there almost no evidence of any soil loss or erosion. However, further upstream where the trees were located, the bank slope was very steep and there was noticably heavy soil loss and erosion as well exposed roots on the trees.

Watershed level stream characteristics data for all sites can be found here.

Home Page | Overview | Map | Stream | Water | Bacterial | Urban Ecology | Conclusion | Site Page